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core-api



    macro
    boot.janet on line 1404, column 1

    (->> x & forms)

    Threading macro. Inserts x as the last value in the first form in 
    `forms`, and inserts the modified first form into the second form 
    in the same manner, and so on. Useful for expressing pipelines of 
    data.

See also:->4 examplesSign in to add an example

# wrap short-fn / | 
(->> 10
     (|(/ $ 2)))
# =>
5

# also wrap fn
(->> 10
     ((fn [n] (/ n 2))))
# =>
5

sogaiuPlayground

(->> "X"
     (string "a" "b")
     (string "c" "d")
     (string "e" "f"))  # => "efcdabX"

uvtcPlayground

(->> 
  (string/split " " "this  is an  example yes, an example")
  (filter (complement empty?))
  (frequencies))
# -> @{"is" 1 "example" 2 "yes," 1 "an" 2 "this" 1}

# same as:
(frequencies
  (filter
    (complement empty?)
    (string/split " " "this  is an  example yes, an example")))

felixrPlayground

(->  1 (< 2))   # -> true
(->> 1 (< 2))   # -> false

cellularmitosisPlayground